William Penn http://xroads.virginia.edu/~CAP/PENN/pnhome.html
Delaware Tribal History http://www.tolatsga.org/dela.html
Pennsylvania Geography http://members.aol.com/bowermanb/PAmaps.html
Pennsylvania Geography http://www.lib.utexas.edu/maps/pennsylvania.html
Pennsylvania geography http://geography.about.com/library/maps/blusx.htm
Pennsylvania http://www.worldalmanacforkids.com/explore/states/pennsylvania.html
Pennsylvania Survey http://www.kidsvotingsoutheastpa.org
Pennsylvania history http://www.state.pa.us/papower/site/default.asp
History of railroading in PA http://www.parailways.com